Dust collector and separator.



PATENJLED MAE-27, A. 0. LYNCH- DUST COLLECTOR AND SEPARATO'R.

APPLICATION FILED SEPT. 17. 1904.

' side elevat1on,with trifugal dust-collector 1 chamber of the casing 1 there is an opening- #the side wall thereof and gradually slides To a) whom it may concern:

, provements in Dust Collectors and Separaof. Fig. 3 is a centra prises a casin' 1 of conical V UNITED. STATES PATENT OFFICE.

ARTHUR C. LYNCH, or RICHMOND HILL,

LING BLOWER a PIPE MANUFACTURING COMPANY, OF HARTFORD,

NEW YORK, ASSIGNOR TO 's'rER- CONNECTICUT, A CORPORATION OF CONNECTICUT.

Dusr COLLECTOR Be it known that I, ARTHUR C. LYNCH, a citizen of the United States, residing at Richmond Hill, county of Queens, State of New York, (whose post-office address is the same,)

have invented certain new and useful Imtors, of whichthe following concise specification.

The invention relates to improvements in devices for collecting and separating dust, chips, shavings, and other solid particles from air, and it involves novel features of operation and arrangement of parts whereby the action of devices of this kind is improved. and certain other advantages secured, as will be hereinafter fully described, and .more articularly pointed out in the appended claims.

Referring to the accompanying drawings, forminga part hereof, Figure 1 represents "a parts in section, of a cencomprising apparatus 2 is a plan View therevertical section of apparatus for .collecting and'separating solid particles of different sizes 1nto different groups, and Fig. 4 is a plan view thereof.

The apparatus illustrated in ,Fig. 1 comor tapering shape aving at its, arger end anair-jescape orifice formed b the-spout 2 and a tangential. airinlet, (in icated bythe numeral 3.) At the lower end or apex of the tapering-separatingis a full, true, and

of this invention. Fi

for the discharge of the separated solid matter, and from thence a pipe 4 leads to the firebo'xof a furnace" {1' or to any other locality in through the tangential inlet 3 receives a whirling or gyratory motion, forming a vortex therein, and the solid matter mixed with the air is thrown by centrifugal force against down the incline and out into the dischargepipe 4, whilethe air near the central portion of thewhirlin body or vortex, becoming in this manner reed from solidmatte rises; through the air-escape orifice out into the atmosphere. The apparatus so far'described is common in this art and will not require further explanation. i a 3 Within the separating-chamber, between Specification of Letters patent. Application filed September 17,1904. Serial No. 224.79%

the diameter and thumb-screw 8.

I amount {of AND SEPARATOR Patented March 27, 1906..

I the openings 2 and 4 thereoffis disposed means for producing a current of air outwardlythrough the discharge-opening for facilitating the exit and discharge of the solid matter therethrough. This means is stationary and utilizes the gyratory motion of the whirling body of air to direct a portion thereof through the opening and to this end may assume various constructional forms.

In preferred form it consists of a spirallyformed' disk 5, mounted upon a rod 6, thelatter being fixedly held in cross-supports 7, .65 I spanning the diameter ofthe air-escape spout The rod 6 is' preferably disposed centrally with respect to the whirling body of air, so that the said spiral disk or air-conveyer will lie in the axis of the vortex thereof.

Asmall percentage of the, whirling air will be caught by the edges of this disk and directed downwardly and outwardly through the passage' i, carrying with it the accumulated separated matter and at the same time obviating anytendency for ascendent aincurrents. therethrough. The force of this outward current depends, primarily, upon the velocity ofthewhirling air, and, secondarily, upon pitch of the spiral disk, as well as upon the re ative position of the same with respect to the apex of the tapering chamber, and regulation of the forceof the outward current may therefore be secured, by

varying, anp1 of these functions. Most conveniently t e relative position of the spiral with respect to the a ex of the chamber ma be changed, and to t his end the rod 6 is a iustablp mounted within-its cross-su eing 1eld in ad'ustable position ports, 1 y the n systems wherein the solid matteru'nder'manipulation is combustible and is utilized as fuel, as re resented by the drawings, it isobvious that e necessary of the same regulated in proportion to the. uel discharged by means of the regulation justdescribed, and in any event the outward current facilitates the discharge of the separated matter, a v frfoo The apparatus of Figs, 3 and 4 operates'in a similar manner to that just described, but is designed also to separate "larger. particles from relative smaller particles carried into it by the same current ofair. It com rises an 10 inner separating-chamber bounded y a pert supply of air for the combustion can be nicelfy 'forate wall 10, which may be a woven-wire screen preferably of cylindrical shape, as shown. The bottom of this chamber 18 provided by a tapered or conical wall 11, terminating at its apex in a ilischarge-opening 12,

through which separated matter of the coarser and a tangential inlet 13, similar to the inlet .the blast of air from the spiral disk.

3, except that it )aSSOS through an exterior chamber, presently described. .The screen and tapered wall 11 are supported by a series of angle-brackets 14 upon the interior of a surrounding imperforate wall 15, which latter may be of any convenient shape'-as, for example, conical, as shown in Fig. 3 of the drawingsand the exterior chamber formed by the wall 15 is closed-at its top, but at its lower end is provided with a discharge-opening 16, surrounding the discharge opening 12, above mentioned, and inclined to one side therefrom for convenience in attaching pipes to both. Within the air-escape brifice of the inner chamber is secured an adjustable rod which bears a spiral disk or air-conveyer similar in function to the conveyer 5 of Fig. 1, but modified in construetion in the respect that this disk is provided at its )eripheral edge with a downwardly-inelined ange, the function of which is to directthe air encountered by it toward the opening 12 in a more concentrated blast. As air enters the sepa rating-chamber through the inlet 13 it receiveaa gyratory motion within the separat ing-ch'amber, and the solid matter therein is thrown by centrifugal force against the perforate cylindricakwall 10, the smaller particles thereof-passing through the apertures into the surrounding chamber and from thence down and outwardly tln'ough the inclined'spout 16. The coarser" solid matter remaining within the chamber slides down the inclined wall of the tapered portion. 11 and out oi" the openings 12 being assisted by The purified air passes upwardly through the air escape into the atmosphere. The surround ing exterior chamber above mentioned recelves only the finer particles and by reason ofits inclined or funnel shape conducts the same into the discharge-spout l6, thesaid particles being assisted in their movement by the air which passes through the screen; but undue. escape of air from the separatingchamber in this manner is prevented by con stricting the exit from the exterior chamber. This constriction may be ell'ectcd. in various waysas, for example, by proportioning the relative sizes or positions of the interior cylindri ral chamber and the exterior tapering chamber, so that the space between the two will be of the proper area to permit only the requisite quantity of air to pass therethrough from the separating-chamber. 1n the drawings the point of constriction is at the point of support of the interior chamber.

From the above description it will be apparent that various modifications in the shape, relative size, and in 'the construction of the interior and exterior chambers may be made without departing from the spirit of this invention, and, moreover, that consider able modification may be made in the structural forn'iation of the spiral disk whereby it will more effectually carry out its lunctipn or additional functions. It is also to be understood that the drawings herein are merely representative of the principle of the above invention and is'not intended to exhibit detail construction of the apparatus, which will of course be determined by the judgment of the immufacturer.,

Having described my invention, what I claim, and desire to secure by United States Letters Patent, is-

1. A dust-collector comprising a tapering separating-chamber with provisions for giving the air introduced therein a gyratory motion, a central spout for the escape of purified air at the larger end and a discharge opening at the smaller end of said chamber, in combination with a longitudinally-adjustable rod held in said spout and a spiral air-conveyer borne by said rod directing a portion of the whirling air of said chamber outwardly through the discharge-opening.

2. A dust-collector comprising an inner separating-chamber in which the air introduced therein forms a vortex, a erforated wall bounding said chamber, Sltlt chamber being also provided with an escape for purified air and a discharge-opening, a rod in said chamber and an air-conveyor mounted on said rod in combination with an imperforate wall surrounding said inner separating-chamber forming an exterior chamber for the separated. particles and spaced from said perforated wall b an annular space to provide a normally open and constricted exit between said exterior chamber and its discharge- 

